<html>
<form style=" background-color: olivedrab">
    <input formControlName="EDI" type="file" class="form-control" (change)="handleFileSelect($event)">
</form>
<body>
    &nbsp;&nbsp;&nbsp;
    <button id="submit" (click)=submitButton()>
        提交
    </button>
    &nbsp;&nbsp;&nbsp;
    <button id="run_code" (click)=runButton()>
        运行代码
    </button>
    <div id="blocklyDiv"></div>
</body>
</html>